Draw the structural formula for the following: 2 , 2 dimethyl pentane

2 , 2 dimethyl pentane is called neo-pentane. It is a structural isomer of heptane with a chemical formula C 7 H 16 . Its structural formula is as follows:

State one relevant reason for the following: Soda-lime is preferred to sodium hydroxide in the laboratory preparation of methane.

In a laboratory, methane is prepared by heating the mixture of sodium acetate and soda-lime. Soda-lime is a mixture of sodium hydroxide and calcium oxide. Since, alone sodium hydroxide is a deliquescent substance that absorbs moisture from the atmosphere and becomes liquid and will affect the production of methane instead soda-lime absorbs less water and makes the production effective.

Write a balanced chemical equation for the following: Producing ethane from bromo-ethane using Zn / Cu couple in alcohol.

Alkyl halides are used to prepare respective alkanes. Bromo-ethane (ethyl bromide) gets reduced in the presence of Zn / Cu couple in alcohol and converts into ethane and forms hydrogen bromide. C 2 H 5 Br + 2 H → Zn / Cu couple in alcohol C 2 H 6 + HBr

Write a balanced chemical equation for the following: Complete combustion of ethane.

Ethane is used as a fuel to get energy. Complete combustion of ethane liberates carbon dioxide along with the formation of water as vapours due to high temperatures. The combustion of ethane gives heat energy. 2 C 2 H 6 + 5 O 2 → 4 CO 2 + 2 H 2 O + Heat

Draw the structural formula for the following: Iso propane

Propane does not exist as iso-propane. The term "-iso" is used when all carbons except one form a chain and the remaining one carbon form a side alkyl chain. The chemical formula for propane is C 3 H 8 . Its structural formula is as follows: